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Distributed generation electricity quantity distribution system and distributed generation electricity quantity distribution method

A technology of distributed power generation and distribution method, applied in photovoltaic power generation, climate sustainability, greenhouse gas reduction and other directions, can solve the problems of residential power consumption, power grid power loss, etc., and achieve the effect of improving enthusiasm and mitigating power grid fluctuations

Inactive Publication Date: 2013-12-25
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the residents fully supplement the electricity to the grid, it will have an impact on the electricity consumption of the residents.
In addition, the electric energy of the power grid itself will also be lost during the valley period of electricity consumption. How to avoid this loss is also a problem

Method used

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  • Distributed generation electricity quantity distribution system and distributed generation electricity quantity distribution method

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Embodiment Construction

[0016] The present invention will be specifically described below in conjunction with the accompanying drawings. It should be understood that the accompanying drawings are only schematic illustrations of the present invention, and should not be construed as limiting the protection scope of the present invention, which should be limited only by the claims.

[0017] see figure 1 , the controller 1 can receive the peak and valley period information from the billing system 2 and the storage power information from the power storage device 6 . When judging from the received information that it is in the peak period of power consumption and the electricity storage device has sufficient power, the controller starts the inverter output device 4 of the grid-connected device 3, so that the current output direction flows to the external grid, and the current of the power generation system passes through the inverter The device is exported through the billing device 2, and the user can ob...

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Abstract

The invention provides a distributed generation electricity quantity distribution system and a distributed generation electricity quantity distribution method. The system comprises a photovoltaic generation device (7), an electricity storage device (6), a grid-connection device (3), a charging device (2) and a controller (1), wherein the grid-connection device (3) is provided with an inversion output device (4) and a rectification input device (5); the controller (1) is used for receiving electricity utilization peak-valley period information from the charging device (2), receiving electricity storage quantity information from the electricity storage device (6), and controlling the inversion output device (4) and the rectification input device (5) according to the information. The method comprises the following steps of a) judging whether the present period is an electricity utilization peak period or an electricity utilization valley period; b) judging the amount of stored electricity of the electricity storage device; and c) deciding whether the generated energy of a photovoltaic system is output outwards or the electricity storage device is charged from an electricity grid according to the judgement. With the adoption of the system and the method, peak-clipping and valley-filling can be performed by adequately utilizing the electricity storage capacity of the household photovoltaic system, so as to supplement insufficient electricity quantity during the peak period, and alleviate the fluctuation of the electricity grid.

Description

technical field [0001] The invention belongs to the field of power supply, and in particular relates to a distributed power distribution system and method. Background technique [0002] The utilization of new energy has become a hot spot at present. In the utilization of new energy, connecting residents' own photovoltaic power generation systems to the grid as distributed photovoltaic power generation points is a potential power generation method. Home photovoltaic power generation systems generally include two parts: photovoltaic cells and power storage equipment. Photovoltaic cells generate electricity during the day, part of which is used by the family, and the rest is stored in the power storage device, and then used by the family at night. However, during the peak period of electricity consumption during the day, it will be more beneficial if this part of excess electricity is supplemented to the grid. Especially in the scorching heat of 2013, the continuous strong su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/46
CPCY02B10/10Y02E10/56Y02E70/30
Inventor 浦瑞天黄韬沈红梅
Owner STATE GRID CORP OF CHINA
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